Calories in grapefruit
Pink and red, raw. 42 kcal (176 kJ) per 100 g. Choose a portion below and every figure on the page updates.
Pink and red grapefruit is about 88% water and provides 42 kcal (176 kJ) per 100 g, almost all from natural sugars. It is a good source of vitamin C, and the pink and red flesh also contains beta-carotene, which white grapefruit largely lacks. Fat and protein are negligible. Its sharp, bitter flavour comes from natural compounds in the flesh and membranes.
Where the energy comes from
Share of total energy contributed by each macronutrient, using the standard 4/4/9 kcal per gram factors:
Full nutrition breakdown
Values shown for 123 g.
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Energy | 52 kcal | – |
| Energy | 216 kJ | – |
| Protein | 0.9 g | 2% |
| Total fat | 0.2 g | <1% |
| Saturated | 0.03 g | <1% |
| Monounsaturated | 0.02 g | – |
| Polyunsaturated | 0.04 g | – |
| Trans | 0 g | – |
| Cholesterol | 0 mg | 0% |
| Total carbohydrate | 13.1 g | 5% |
| Sugars | 8.47 g | – |
| Starch | 0 g | – |
| Fibre | 2 g | 7% |
| Water | 108.3 g | – |
| Vitamins | ||
| Vitamin A | 71.3 µg | 8% |
| Vitamin C | 38.4 mg | 43% |
| Vitamin E | 0.16 mg | 1% |
| Vitamin K | 0 µg | 0% |
| Thiamin (B1) | 0.053 mg | 4% |
| Riboflavin (B2) | 0.038 mg | 3% |
| Niacin (B3) | 0.251 mg | 2% |
| Pantothenic acid (B5) | 0.322 mg | 6% |
| Vitamin B6 | 0.065 mg | 4% |
| Folate | 16 µg | 4% |
| Choline | 9.5 mg | 2% |
| Minerals | ||
| Calcium | 27.1 mg | 2% |
| Iron | 0.098 mg | <1% |
| Magnesium | 11.1 mg | 3% |
| Phosphorus | 22.1 mg | 2% |
| Potassium | 166.1 mg | 4% |
| Sodium | 0 mg | 0% |
| Zinc | 0.086 mg | <1% |
| Copper | 0.039 mg | 4% |
| Manganese | 0.027 mg | 1% |
| Selenium | 0.123 µg | <1% |
Daily Values are the FDA reference intakes for adults and children aged 4 and over, based on a 2,000 kcal diet. They are a labelling standard, not a personal target.
Common portions
| Portion | Grams | kcal | kJ | Protein g | Carbs g | Fat g |
|---|---|---|---|---|---|---|
| 1/2 grapefruit | 123 | 52 | 216 | 0.9 | 13.1 | 0.2 |
| 1 cup, sections with juice | 230 | 97 | 404 | 1.8 | 24.5 | 0.3 |
Things worth knowing
- Half a grapefruit (123 g) has about 52 kcal / 216 kJ and around 38 mg of vitamin C, about 43% of the Daily Value.
- White grapefruit is slightly lower at 33 kcal per 100 g, and pink and red varieties provide far more vitamin A: 58 µg per 100 g against 2 µg.
- The old "grapefruit diet" idea that it burns fat is not supported; grapefruit is simply low in calories and high in water.
- Grapefruit and its juice interact with a number of prescription medicines, including some statins, so check the leaflet or ask a pharmacist if you take regular medication.
Converting these figures
One 1/2 grapefruit of grapefruit is 52 kcal, which is 216 kJ. To convert any other figure, divide kilojoules by 4.184 for calories, or use the converter on the home page.
It takes 569 g of grapefruit to reach 1,000 kJ (239 kcal). See how that compares with other foods on the 1000 kJ to calories page.
Similar foods
Compare all 37 fruits in one table →
Source: USDA FoodData Central, SR Legacy 09112. Values are averages; individual samples vary with variety, growing conditions, and preparation.